Sash-lock.



J. P. GASSIDY.

SASH LOCK.

APPLICATION FILED DEO.1, 1908.

Patented June 29, 1909.

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SASH LOOK.

A PPLIOATION IILED 1330.1, 1908.

v 7 M M m ms. 2 W 9 JAMES P. GASSIDY, OF NEW HAVEN, CONNECTICUT.

SASH-LOCK.

Specification of Letters Patent.

Patented June 29, 1909.

Application filed. December 1, 1908. Serial No. 465,509.

T all whom it may concern:

Be it known that 1, JAMES P. CAssIDY, a citizen of the United States, residing at New Haven, in the county of New Haven, State of Connecticut, have invented certain new and useful Improvements in Sash-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make. and use the same.

This invention relates to sash locks; and has for its object to provide a simple, cheap and eilicient device for locking together and to the window frame the upper and lower sashes of a window, either when wholly closed or when the u per or lower sash or both are partly open for the purpose of ventilation, the device holding them in such position as to prevent further movement from the outside, in case an attempt should be made to enter a house through a window.

With this and other objects in view, the invention consists of a novel construction, combination and arrangement of parts hereinafter described and claimed, and illustrated in the accompanying drawings, in which,

Figure 1 is a transverse section through one side of a window on a plane slightly above the lower sash with the locking bolts retracted Fig. 2 is a similar view with the locking bolts projected into 0 enings formed in the uppersash and the winc 0w frame; Fig.

' 3 is an edge view of the sash lock viewed from the side adjacent the window frame Fig. 4 is a sectional view on the line 44 of Fig. l Figs. 5, 6 and 7 are perspective views, illustrating, respectively, the operating lever, locking bolt and the plate which supports the same.

Similar reference characters are used in all 'of the figures to indicate the same parts.

In the drawings, A indicates a window frame, B the lower sash and C the upper sash of ordinary form.

Screwed on the top rail of the lower sash is a fiat plate 1 provided on its upper surface with projecting lugs 2 and 3 at adjacent edges and a boss 4 near the center of the plate with a cam surface 5 formed on its upper face and a vertical hole 6 threaded for the pivot screw 7 of an operating lever 8. Two bolts 9 and 10 are formed with vertical longitudinal slots 11 therethrough and horizontal slots 12 near their inner ends. These bolts are arranged to slide on the top of the plate 1 at right angles to each other and enter openings 13 and 14 in the window frame and upper sash respectively. The upstanding lugs 2 and 3 on the plate 1 enter the slots 11 in said bolts and serve as guides therefor as they are moved into and out of the aforesaid openings. If desired, screws or rivets 15 may be fastened to the lugs 2 and 3 with their heads overlying the bolts 9 and 10 for the pin-pose of retaining them in position on the ates.

The lever 8 is formed with a central hub 16 and two projecting arms 17 and 18 which engage res ectively with the transverse slots 12 in the ocking bolts 9 and 10, to project and retract the same. These levers are operated by means of a finger piece 20 projecting inwardly from the hub 16. The lever 8 is mounted to turn on the boss 4, the under surface of the hub 16 of said lever having a cam surface 21 to engage with the cam face of said boss 4 when the lever is in position to render the locking bolts inoperative, but when it is turned on its pivot 7 to advance said bolts into their res ective openings 13 and 14, the cam 21 011 tlie lever will ride up on the cam surface 5 of the boss and lock said lever tightly in its operative position, so that it cannot be released by jarring or shaking the window.

In practice, it will be advisable to have a vertical series of openings 13 and 14, so that the sash can be raised and lowered a greater or less distance as desired, or either sash alone may be opened and locked to the other, as well as to the window frame. This device, comprises few parts which may be made very strong and will render eflicient service when applied to a window in the manner described.

1V hat is claimed is 1. A sash lock, comprising a flat late adapted to be fastened on the top of the lower sash, a pair of locking bolts mounted thereon, each bolt having a vertical longitudinal slot formed therein to receive an upstanding lug rising from said plate, said bolts arranged to slide at right angles to each other and inter-suitably spaced openings in the upper sash and the window frame, and an operating lever having three arms pivoted on a boss on the plate, two of said arms engaging slots in the inner ends of said bolts to operate them and the third arm serving as a finger piece, the adjacent faces of the boss and the lever being provided with cooperating cams.

2. A sash look, comprising a flat plate adapted to be fastened on the top of the lower sash of a window, and provided with two upstanding lugs near adjacent edges thereof and a boss having a cam surface on its face, a pair of looking bolts mounted on each plate and slidable longitudinally at right angles to each other, said bolts being provided withlon-gitudinal slots for said lugs and means attached to the lugs for retaining the bolts thereon, and an operating lever provided with a cam on its under surface pivotally mounted on said boss and provided with two projecting arms to engage said locking bolts and a finger piece for operating said lever.

In testimony whereof, I afliX my signature, in presence of two witnesses.

JAMES P. CASSIDY. W'itnesses:

JOHN E. CAssrDY, WM. A. OURRIE. 

